Themosis\Validation\ValidationBuilder::getAttributes PHP Method

    protected function getAttributes($attributes)
    {
        // If comma, get a list of attributes
        if (0 < strpos($attributes, ',')) {
            $attributes = explode(',', $attributes);
            $attributes = array_map(function ($att) {
                return trim($att);
            }, $attributes);
        } else {
            // No comma, only one attribute
            $attributes = [trim($attributes)];
        }
        return $attributes;
    }